As governor, Ritter helped establish Colorado as a national and international leader in clean energy. In the book, Ritter discusses how sunlight and other sustainable resources are now the fastest-growing sources of energy in the U.S. and worldwide. At an increasing clip, communities are switching to 100 percent renewable energy, and climate change is one of the biggest issues in the 2016 election. The urgent need to prevent climate change is causing people around the planet to question their reliance on carbon-intensive coal and oil.